package com.hundsun.client.ency.app;

public class Encryptor {
    public static final String  HUNDSUN_VERSION="@system  理财销售系统 @version 1.2.0.0 @lastModiDate @describe ";
     protected static final int BLOCK_SIZE = 8;

     private int[] workingKey = null;

     private byte[] userkey = null;

     /**
      * standard constructor.
      */
     public Encryptor(byte[] userkey) {
         this.userkey = userkey;
     }

     /**
      * initialise a DES cipher.
      *
      * @param forEncryption whether or not we are for encryption.
      * @param params the parameters required to set up the cipher.
      * @exception IllegalArgumentException if the params argument is
      * inappropriate.
      */
     public void init(boolean encrypting, byte[] key) {
         if (key != null) {
             workingKey = generateWorkingKey(encrypting, key);
             return;
         }

         else {
             throw new IllegalArgumentException(
                 "invalid parameter passed to DES init - ");
         }
     }

     public int getBlockSize() {
         return BLOCK_SIZE;
     }

     /**
      * <p>it used to check the parameters and then call desfun()</p>
      */
     public int processBlock(
         byte[] in,
         int inOff,
         byte[] out,
         int outOff) {
         if (workingKey == null) {
             throw new IllegalStateException("DES engine not initialised");
         }

         if ( (inOff + BLOCK_SIZE) > in.length) {
             throw new IllegalStateException("input buffer too short");
         }

         if ( (outOff + BLOCK_SIZE) > out.length) {
             throw new IllegalStateException("output buffer too short");
         }

         desFunc(workingKey, in, inOff, out, outOff);

         return BLOCK_SIZE;
     }

     /**
      * what follows is mainly taken from "Applied Cryptography", by
      * Bruce Schneier, however it also bears great resemblance to Richard
      * Outerbridge's D3DES...
      */

     static short[] Df_Key = {
         0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
         0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
         0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67
     };

     static short[] bytebit = {
         0200, 0100, 040, 020, 010, 04, 02, 01
     };

     static int[] bigbyte = {
         0x800000, 0x400000, 0x200000, 0x100000,
         0x80000, 0x40000, 0x20000, 0x10000,
         0x8000, 0x4000, 0x2000, 0x1000,
         0x800, 0x400, 0x200, 0x100,
         0x80, 0x40, 0x20, 0x10,
         0x8, 0x4, 0x2, 0x1
     };

     /*
      * Use the key schedule specified in the Standard (ANSI X3.92-1981).
      */

     static byte[] pc1 = {
         56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
         9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
         62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
         13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3
     };

     static byte[] totrot = {
         1, 2, 4, 6, 8, 10, 12, 14,
         15, 17, 19, 21, 23, 25, 27, 28
     };

     static byte[] pc2 = {
         13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9,
         22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
         40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
         43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31
     };

     static int[] SP1 = {
         0x01010400, 0x00000000, 0x00010000, 0x01010404,
         0x01010004, 0x00010404, 0x00000004, 0x00010000,
         0x00000400, 0x01010400, 0x01010404, 0x00000400,
         0x01000404, 0x01010004, 0x01000000, 0x00000004,
         0x00000404, 0x01000400, 0x01000400, 0x00010400,
         0x00010400, 0x01010000, 0x01010000, 0x01000404,
         0x00010004, 0x01000004, 0x01000004, 0x00010004,
         0x00000000, 0x00000404, 0x00010404, 0x01000000,
         0x00010000, 0x01010404, 0x00000004, 0x01010000,
         0x01010400, 0x01000000, 0x01000000, 0x00000400,
         0x01010004, 0x00010000, 0x00010400, 0x01000004,
         0x00000400, 0x00000004, 0x01000404, 0x00010404,
         0x01010404, 0x00010004, 0x01010000, 0x01000404,
         0x01000004, 0x00000404, 0x00010404, 0x01010400,
         0x00000404, 0x01000400, 0x01000400, 0x00000000,
         0x00010004, 0x00010400, 0x00000000, 0x01010004
     };

     static int[] SP2 = {
         0x80108020, 0x80008000, 0x00008000, 0x00108020,
         0x00100000, 0x00000020, 0x80100020, 0x80008020,
         0x80000020, 0x80108020, 0x80108000, 0x80000000,
         0x80008000, 0x00100000, 0x00000020, 0x80100020,
         0x00108000, 0x00100020, 0x80008020, 0x00000000,
         0x80000000, 0x00008000, 0x00108020, 0x80100000,
         0x00100020, 0x80000020, 0x00000000, 0x00108000,
         0x00008020, 0x80108000, 0x80100000, 0x00008020,
         0x00000000, 0x00108020, 0x80100020, 0x00100000,
         0x80008020, 0x80100000, 0x80108000, 0x00008000,
         0x80100000, 0x80008000, 0x00000020, 0x80108020,
         0x00108020, 0x00000020, 0x00008000, 0x80000000,
         0x00008020, 0x80108000, 0x00100000, 0x80000020,
         0x00100020, 0x80008020, 0x80000020, 0x00100020,
         0x00108000, 0x00000000, 0x80008000, 0x00008020,
         0x80000000, 0x80100020, 0x80108020, 0x00108000
     };

     static int[] SP3 = {
         0x00000208, 0x08020200, 0x00000000, 0x08020008,
         0x08000200, 0x00000000, 0x00020208, 0x08000200,
         0x00020008, 0x08000008, 0x08000008, 0x00020000,
         0x08020208, 0x00020008, 0x08020000, 0x00000208,
         0x08000000, 0x00000008, 0x08020200, 0x00000200,
         0x00020200, 0x08020000, 0x08020008, 0x00020208,
         0x08000208, 0x00020200, 0x00020000, 0x08000208,
         0x00000008, 0x08020208, 0x00000200, 0x08000000,
         0x08020200, 0x08000000, 0x00020008, 0x00000208,
         0x00020000, 0x08020200, 0x08000200, 0x00000000,
         0x00000200, 0x00020008, 0x08020208, 0x08000200,
         0x08000008, 0x00000200, 0x00000000, 0x08020008,
         0x08000208, 0x00020000, 0x08000000, 0x08020208,
         0x00000008, 0x00020208, 0x00020200, 0x08000008,
         0x08020000, 0x08000208, 0x00000208, 0x08020000,
         0x00020208, 0x00000008, 0x08020008, 0x00020200
     };

     static int[] SP4 = {
         0x00802001, 0x00002081, 0x00002081, 0x00000080,
         0x00802080, 0x00800081, 0x00800001, 0x00002001,
         0x00000000, 0x00802000, 0x00802000, 0x00802081,
         0x00000081, 0x00000000, 0x00800080, 0x00800001,
         0x00000001, 0x00002000, 0x00800000, 0x00802001,
         0x00000080, 0x00800000, 0x00002001, 0x00002080,
         0x00800081, 0x00000001, 0x00002080, 0x00800080,
         0x00002000, 0x00802080, 0x00802081, 0x00000081,
         0x00800080, 0x00800001, 0x00802000, 0x00802081,
         0x00000081, 0x00000000, 0x00000000, 0x00802000,
         0x00002080, 0x00800080, 0x00800081, 0x00000001,
         0x00802001, 0x00002081, 0x00002081, 0x00000080,
         0x00802081, 0x00000081, 0x00000001, 0x00002000,
         0x00800001, 0x00002001, 0x00802080, 0x00800081,
         0x00002001, 0x00002080, 0x00800000, 0x00802001,
         0x00000080, 0x00800000, 0x00002000, 0x00802080
     };

     static int[] SP5 = {
         0x00000100, 0x02080100, 0x02080000, 0x42000100,
         0x00080000, 0x00000100, 0x40000000, 0x02080000,
         0x40080100, 0x00080000, 0x02000100, 0x40080100,
         0x42000100, 0x42080000, 0x00080100, 0x40000000,
         0x02000000, 0x40080000, 0x40080000, 0x00000000,
         0x40000100, 0x42080100, 0x42080100, 0x02000100,
         0x42080000, 0x40000100, 0x00000000, 0x42000000,
         0x02080100, 0x02000000, 0x42000000, 0x00080100,
         0x00080000, 0x42000100, 0x00000100, 0x02000000,
         0x40000000, 0x02080000, 0x42000100, 0x40080100,
         0x02000100, 0x40000000, 0x42080000, 0x02080100,
         0x40080100, 0x00000100, 0x02000000, 0x42080000,
         0x42080100, 0x00080100, 0x42000000, 0x42080100,
         0x02080000, 0x00000000, 0x40080000, 0x42000000,
         0x00080100, 0x02000100, 0x40000100, 0x00080000,
         0x00000000, 0x40080000, 0x02080100, 0x40000100
     };

     static int[] SP6 = {
         0x20000010, 0x20400000, 0x00004000, 0x20404010,
         0x20400000, 0x00000010, 0x20404010, 0x00400000,
         0x20004000, 0x00404010, 0x00400000, 0x20000010,
         0x00400010, 0x20004000, 0x20000000, 0x00004010,
         0x00000000, 0x00400010, 0x20004010, 0x00004000,
         0x00404000, 0x20004010, 0x00000010, 0x20400010,
         0x20400010, 0x00000000, 0x00404010, 0x20404000,
         0x00004010, 0x00404000, 0x20404000, 0x20000000,
         0x20004000, 0x00000010, 0x20400010, 0x00404000,
         0x20404010, 0x00400000, 0x00004010, 0x20000010,
         0x00400000, 0x20004000, 0x20000000, 0x00004010,
         0x20000010, 0x20404010, 0x00404000, 0x20400000,
         0x00404010, 0x20404000, 0x00000000, 0x20400010,
         0x00000010, 0x00004000, 0x20400000, 0x00404010,
         0x00004000, 0x00400010, 0x20004010, 0x00000000,
         0x20404000, 0x20000000, 0x00400010, 0x20004010
     };

     static int[] SP7 = {
         0x00200000, 0x04200002, 0x04000802, 0x00000000,
         0x00000800, 0x04000802, 0x00200802, 0x04200800,
         0x04200802, 0x00200000, 0x00000000, 0x04000002,
         0x00000002, 0x04000000, 0x04200002, 0x00000802,
         0x04000800, 0x00200802, 0x00200002, 0x04000800,
         0x04000002, 0x04200000, 0x04200800, 0x00200002,
         0x04200000, 0x00000800, 0x00000802, 0x04200802,
         0x00200800, 0x00000002, 0x04000000, 0x00200800,
         0x04000000, 0x00200800, 0x00200000, 0x04000802,
         0x04000802, 0x04200002, 0x04200002, 0x00000002,
         0x00200002, 0x04000000, 0x04000800, 0x00200000,
         0x04200800, 0x00000802, 0x00200802, 0x04200800,
         0x00000802, 0x04000002, 0x04200802, 0x04200000,
         0x00200800, 0x00000000, 0x00000002, 0x04200802,
         0x00000000, 0x00200802, 0x04200000, 0x00000800,
         0x04000002, 0x04000800, 0x00000800, 0x00200002
     };

     static int[] SP8 = {
         0x10001040, 0x00001000, 0x00040000, 0x10041040,
         0x10000000, 0x10001040, 0x00000040, 0x10000000,
         0x00040040, 0x10040000, 0x10041040, 0x00041000,
         0x10041000, 0x00041040, 0x00001000, 0x00000040,
         0x10040000, 0x10000040, 0x10001000, 0x00001040,
         0x00041000, 0x00040040, 0x10040040, 0x10041000,
         0x00001040, 0x00000000, 0x00000000, 0x10040040,
         0x10000040, 0x10001000, 0x00041040, 0x00040000,
         0x00041040, 0x00040000, 0x10041000, 0x00001000,
         0x00000040, 0x10040040, 0x00001000, 0x00041040,
         0x10001000, 0x00000040, 0x10000040, 0x10040000,
         0x10040040, 0x10000000, 0x00040000, 0x10001040,
         0x00000000, 0x10041040, 0x00040040, 0x10000040,
         0x10040000, 0x10001000, 0x10001040, 0x00000000,
         0x10041040, 0x00041000, 0x00041000, 0x00001040,
         0x00001040, 0x00040040, 0x10000000, 0x10041000
     };

     /**
      * generate an integer based working key based on our secret key
      * and what we processing we are planning to do.
      *
      * Acknowledgements for this routine go to James Gillogly & Phil Karn.
      *         (whoever, and wherever they are!).
      */
     protected int[] generateWorkingKey(
         boolean encrypting,
         byte[] key) {
         int[] newKey = new int[32];
         boolean[] pc1m = new boolean[56],
             pcr = new boolean[56];

         for (int j = 0; j < 56; j++) {
             int l = pc1[j];

             pc1m[j] = ( (key[l >>> 3] & bytebit[l & 07]) != 0);
         }

         for (int i = 0; i < 16; i++) {
             int l, m, n;

             if (encrypting) {
                 m = i << 1;
             }
             else {
                 m = (15 - i) << 1;
             }

             n = m + 1;
             newKey[m] = newKey[n] = 0;

             for (int j = 0; j < 28; j++) {
                 l = j + totrot[i];
                 if (l < 28) {
                     pcr[j] = pc1m[l];
                 }
                 else {
                     pcr[j] = pc1m[l - 28];
                 }
             }

             for (int j = 28; j < 56; j++) {
                 l = j + totrot[i];
                 if (l < 56) {
                     pcr[j] = pc1m[l];
                 }
                 else {
                     pcr[j] = pc1m[l - 28];
                 }
             }

             for (int j = 0; j < 24; j++) {
                 if (pcr[pc2[j]]) {
                     newKey[m] |= bigbyte[j];
                 }

                 if (pcr[pc2[j + 24]]) {
                     newKey[n] |= bigbyte[j];
                 }
             }
         }

         //
         // store the processed key
         //
         for (int i = 0; i != 32; i += 2) {
             int i1, i2;

             i1 = newKey[i];
             i2 = newKey[i + 1];

             newKey[i] = ( (i1 & 0x00fc0000) << 6) | ( (i1 & 0x00000fc0) << 10)
                 | ( (i2 & 0x00fc0000) >>> 10) | ( (i2 & 0x00000fc0) >>> 6);

             newKey[i + 1] = ( (i1 & 0x0003f000) << 12) |
                 ( (i1 & 0x0000003f) << 16)
                 | ( (i2 & 0x0003f000) >>> 4) | (i2 & 0x0000003f);
         }

         return newKey;
     }

     /**
      * the DES engine.
      */
     protected void desFunc(
         int[] wKey,
         byte[] in,
         int inOff,
         byte[] out,
         int outOff) {
         int work, right, left;

         left = (in[inOff + 0] & 0xff) << 24;
         left |= (in[inOff + 1] & 0xff) << 16;
         left |= (in[inOff + 2] & 0xff) << 8;
         left |= (in[inOff + 3] & 0xff);

         right = (in[inOff + 4] & 0xff) << 24;
         right |= (in[inOff + 5] & 0xff) << 16;
         right |= (in[inOff + 6] & 0xff) << 8;
         right |= (in[inOff + 7] & 0xff);

         work = ( (left >>> 4) ^ right) & 0x0f0f0f0f;
         right ^= work;
         left ^= (work << 4);
         work = ( (left >>> 16) ^ right) & 0x0000ffff;
         right ^= work;
         left ^= (work << 16);
         work = ( (right >>> 2) ^ left) & 0x33333333;
         left ^= work;
         right ^= (work << 2);
         work = ( (right >>> 8) ^ left) & 0x00ff00ff;
         left ^= work;
         right ^= (work << 8);
         right = ( (right << 1) | ( (right >>> 31) & 1)) & 0xffffffff;
         work = (left ^ right) & 0xaaaaaaaa;
         left ^= work;
         right ^= work;
         left = ( (left << 1) | ( (left >>> 31) & 1)) & 0xffffffff;

         for (int round = 0; round < 8; round++) {
             int fval;

             work = (right << 28) | (right >>> 4);
             work ^= wKey[round * 4 + 0];
             fval = SP7[work & 0x3f];
             fval |= SP5[ (work >>> 8) & 0x3f];
             fval |= SP3[ (work >>> 16) & 0x3f];
             fval |= SP1[ (work >>> 24) & 0x3f];
             work = right ^ wKey[round * 4 + 1];
             fval |= SP8[work & 0x3f];
             fval |= SP6[ (work >>> 8) & 0x3f];
             fval |= SP4[ (work >>> 16) & 0x3f];
             fval |= SP2[ (work >>> 24) & 0x3f];
             left ^= fval;
             work = (left << 28) | (left >>> 4);
             work ^= wKey[round * 4 + 2];
             fval = SP7[work & 0x3f];
             fval |= SP5[ (work >>> 8) & 0x3f];
             fval |= SP3[ (work >>> 16) & 0x3f];
             fval |= SP1[ (work >>> 24) & 0x3f];
             work = left ^ wKey[round * 4 + 3];
             fval |= SP8[work & 0x3f];
             fval |= SP6[ (work >>> 8) & 0x3f];
             fval |= SP4[ (work >>> 16) & 0x3f];
             fval |= SP2[ (work >>> 24) & 0x3f];
             right ^= fval;
         }

         right = (right << 31) | (right >>> 1);
         work = (left ^ right) & 0xaaaaaaaa;
         left ^= work;
         right ^= work;
         left = (left << 31) | (left >>> 1);
         work = ( (left >>> 8) ^ right) & 0x00ff00ff;
         right ^= work;
         left ^= (work << 8);
         work = ( (left >>> 2) ^ right) & 0x33333333;
         right ^= work;
         left ^= (work << 2);
         work = ( (right >>> 16) ^ left) & 0x0000ffff;
         left ^= work;
         right ^= (work << 16);
         work = ( (right >>> 4) ^ left) & 0x0f0f0f0f;
         left ^= work;
         right ^= (work << 4);

         out[outOff + 0] = (byte) ( (right >>> 24) & 0xff);
         out[outOff + 1] = (byte) ( (right >>> 16) & 0xff);
         out[outOff + 2] = (byte) ( (right >>> 8) & 0xff);
         out[outOff + 3] = (byte) (right & 0xff);
         out[outOff + 4] = (byte) ( (left >>> 24) & 0xff);
         out[outOff + 5] = (byte) ( (left >>> 16) & 0xff);
         out[outOff + 6] = (byte) ( (left >>> 8) & 0xff);
         out[outOff + 7] = (byte) (left & 0xff);
     }

     /**
      *	以下代码由陈程添加
      */

     /**
      *	encrypt the data
      *	@param byte[]
      *	@return byte[]
      */
     public byte[] encrypt(byte[] idata) {
         if(idata == null || idata.length == 0) {
             return null;
         }

         init(true, userkey);

         int processTimes = idata.length / BLOCK_SIZE;
         int leftdata = idata.length % BLOCK_SIZE;
         int olen = 0;
         byte[] buf = new byte[BLOCK_SIZE * (processTimes + 1)];

         for (int i = 0; i < processTimes; i++) {
             olen = i * BLOCK_SIZE;
             processBlock(idata, olen, buf, olen);
         }

         if(processTimes>0)    //modified by  jyh 20071211
         olen += BLOCK_SIZE;

         if (leftdata != 0) {

             byte[] temp = new byte[BLOCK_SIZE];
             for (int j = 0; j < leftdata; j++) {
                 temp[j] = idata[j + olen];
             }
             for (int k = leftdata; k < BLOCK_SIZE; k++) {
                 //temp[k] = (byte) (BLOCK_SIZE - leftdata);  //MODIFIED BY JYH 20080610  发现与后台unix端的加密算法不一致
                 temp[k] = '\0';
             }
             processBlock(temp, 0, buf, olen);
             olen += BLOCK_SIZE;
         }

         byte[] result = new byte[olen];
         for (int j = 0; j < olen; j++) {
             result[j] = buf[j];
         }
         return result;
     }

     /**
      * 	decrypt the data
      *	@param byte[]
      *	@return byte[]
      */
     public byte[] decrypt(byte[] idata) {
         if (idata == null || idata.length == 0) {
             return null;
         }
         init(false, userkey);

         int processTimes = idata.length / BLOCK_SIZE;
         int leftdata = idata.length % BLOCK_SIZE;

         if (leftdata != 0) {
             throw new IllegalStateException("input not BLOCK_SIZE times");
         }

         int olen = 0;
         byte[] buf = new byte[idata.length];

         for (int i = 0; i < processTimes; i++) {
             olen = i * BLOCK_SIZE;
             processBlock(idata, olen, buf, olen);
         }

         byte bt;
         for (int j = 1; j < BLOCK_SIZE; j++) {
             bt = buf[olen + j];
             int k = j;
             for (; k < BLOCK_SIZE; k++) {
                 if (bt != buf[olen + k]) {
                     break;
                 }
             }
             if (k == BLOCK_SIZE) {
                 if (j == BLOCK_SIZE - bt) {

                     olen = olen + j;
                     break;
                 }
                 else if (j == BLOCK_SIZE - 1) {
                     olen += BLOCK_SIZE;
                 }
             }
         }

         byte[] odata = new byte[olen];

         for (int k = 0; k < olen; k++) {
             odata[k] = buf[k];
         }
         return odata;
     }
 }
